The granular jamming transition is experimentally investigated in a two-dimensional system of frictional, bidispersed disks subject to quasistatic, uniaxial compression without vibrational disturbances (zero granular temperature). Three primary results are presented in this experimental study. First, using disks with different static friction coefficients (μ), we experimentally verify numerical...

Abstract Based on the review of a wide range literature, this paper finds that: (1) average specific surface energy various single crystals is only 0.8 J/m 2 . (2) The fracture rocks with pre-crack under static cleavage tests 4.6 (3) pre-cut notch but no tensile (mode I) (4) energies regular rock specimens neither pre-made crack nor are 26.6, 13.9 and 25.7 uniaxial compression, tension shear te...

In order to solve the engineering problem that bolt tail is often broken under impact of rock pressure, mining stress and damage support structure contribute great hidden danger safety tunneling. A new anti-impact designed can absorb energy pressure. The double laminated springs inner spring deform load achieve purpose absorbing most energy. composition working principle energy-absorbing introd...

The normal specifications of motor gasolines as well as their combustion characteristics in internal combustion engines are reviewed in this paper. The effective factors influencing the fuel performance, such as the molecular structure of the fuel constituents, the operating conditions and the atmospheric pressure and temperature are also discussed. A relationship between the optimum octane num...

In this work, we have devised a new approach to measure the critical pressure that a liquid marble can withstand. A liquid marble is gradually squeezed under a mechanical compression applied by two parallel plates. It ruptures at a sufficiently large applied pressure. Combining the force measurement and the high-speed imaging, we can determine the critical pressure that ruptures the liquid marb...

The design of adhesively bonded connections for structural applications has recently become a major field research, with extensive in the automotive and aerospace industries. In these structures, joints are often subjected to important static dynamic loads, which require careful geometrical dimensioning material selection. performance analysis adhesive under conditions is made numerical modelin...

Abstract Synchrotrons and free electron lasers are unique facilities to probe the atomic structure electronic properties of matter at extreme thermodynamical conditions. In this context, ‘matter pressures temperatures’ was one science drivers for construction low emittance 4th generation synchrotron sources such as Extremely Brilliant Source European Synchrotron Radiation Facility hard x-ray la...

The inlet is designed to compress the air and increase static pressure. In present work, analyses have been carried out using 2D axisymmetric Reynolds averaged Navier Stokes equations (RANS) capture flow physics of shock structure produced by multi-row disk device at different semi-cone angles. work involves numerical studies on over disk. Drag coefficient, pressure variation, vortex behavior w...